JP4259352B2 - Elevator door equipment - Google Patents

Description

  The present invention relates to an elevator, and more particularly to an elevator door device that opens and closes a landing door in conjunction with opening and closing of an elevator car door.

  In conventional elevators, engaging members are provided on both the car door and the landing door, and when the elevator car reaches the landing, these engaging members are engaged with each other to open and close the car door and open and close the landing door. Are linked. Due to the provision of engaging members on both the car door and the landing door, a gap of about 30 mm is required between the car side sill and the landing side sill.

  By the way, if a gap is formed between the car side sill and the landing side sill, wheels such as wheelchairs and carts may fall off or drop objects between the sills. Therefore, in order to eliminate such problems, Patent Document 1 provides an engagement plate on the car door side, an engagement roller on the landing door side, and retracts the engagement plate in a direction away from the landing door during normal times. The car door and the landing door are interlocked by advancing so as to be engageable with the engaging roller only when the car is landed, and engaging the engaging roller with the engaging plate. At that time, the electromagnet is de-energized or energized to advance and retract the engagement plate. Thereby, since the engagement plate and the engaged roller are engaged only during the door opening / closing operation, the gap between the landing side sill and the car sill can be narrowed.

Japanese Patent Laid-Open No. 5-78067

  However, the elevator door device described in Patent Document 1 does not fully consider door operation during a power failure. In other words, if the power stops or power supply becomes difficult after the elevator has landed on the predetermined floor and the engagement plate and the engagement roller have engaged and the door opening / closing operation has started, the holding power of the electromagnet is lost and the engagement plate and The engagement with the engagement roller is released. As a result, it is difficult to open both the landing-side door and the car door at the same time, and the user may not be able to escape from the car until the rescuer arrives. Further, since the forward / backward direction of the engagement plate of the car door is the vertical direction, the weight of the engagement plate of the car door also acts on the electromagnet, resulting in a problem that the electromagnet is enlarged.

  The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to provide a simple structure capable of reliably operating a door even in the event of a power failure while narrowing the gap between the car side sill and the landing side sill. It is to realize the elevator door device. Another object of the present invention is to ensure that an elevator user can leave an elevator car even in an emergency.

In order to achieve the above-mentioned object, the present invention is attached to a landing side hanger having an L-shaped cross section disposed on the upper end surface of the landing door and extending in the opening and closing direction, and the width direction end of each landing side hanger A landing-side engagement roller, and an end surface of the landing-side engagement roller is the same as or more than the end surface of the landing-side sill, a landing door engaging portion, and an upper end surface of the car door An L-shaped hanger arranged in parallel to the landing-side hanger, an engagement roller attached to the width direction end of the hanger, and a car attached to the width direction intermediate portion of the hanger An elevator door device having a car door engaging portion having an engaging element, wherein the car engaging element engages with the landing door engaging part when the door is opened and closed, and the landing door opens and closes in synchronization with the car door At the top of the hanger. A mover projecting from one end side, and the mover acts in the opening / closing direction of the car door so that the engaging element protrudes toward the landing side or retracts toward the car side, and a tip portion on the mover , A shaft (34) extending vertically through a hole formed in the end of the joint opposite to the solenoid, and one end attached to the shaft (34). The other end is attached to the car engagement element, and a pair of long links arranged vertically, a shaft (33) passing through a hole formed in an intermediate portion of each long link, and the shaft (33) One end side is attached to the hanger, the other end side is attached to the hanger, and is fixed to be pivotable at intervals in the vertical direction, and the length of the long link is the length of the short link. To the solenoid, When the power supply is stopped, the mover is pushed out of the solenoid and moves, and the other end of the long link linearly moves in a direction converted 90 degrees with respect to the one end side. A child moves from the car door side to the landing door side and engages with the landing door engaging portion .

In the above-mentioned one, one end is attached to the intermediate part of the joint, and the lower end part is fixed to the hanger through the parallel link (30) and the shaft (35) is pivotally fixed to the engaging element. It is preferable that the other end portion includes a parallel link (29) fixed to the hanger.
Moreover, in the above-mentioned thing, it is desirable to provide the electric double layer capacitor which supplies electric power to the solenoid only for a predetermined time at the time of a power failure.

  According to the present invention, the elevator door device is provided with an engaging means capable of moving forward and backward, and when the engaging means provided on both the landing side door and the car side door are not in the engaged state, the car side engaging means is Since it is retracted inside the car sill and protrudes only when the door is opened and closed, the gap between the car sill and the landing sill can be narrowed.

  In addition, when each engaging means is in the engaged state, the device that drives the engaging means is a simple device that does not require power supply, so even when power is interrupted or power supply is interrupted You can operate the elevator door. Therefore, a user in the car can safely leave the car.

  Hereinafter, an embodiment of an elevator door device according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of the elevator door device 80, and FIG. 2 is a view taken along the line ZZ in FIG. The elevator door device 80 includes a landing door engaging portion 81 provided on the landing doors 2a and 2b and a car door engaging portion 82 provided on the car doors 2a and 2b.

  The landing door engaging portion 81 includes L-shaped cross-sectional hangers 8a and 8b arranged on the upper end surfaces of the landing doors 2a and 2b so as to extend in the opening and closing direction of the landing doors 2a and 2b, and the widths of the hangers 8a and 8b. Engaging rollers 10a and 10b attached to the end portions in the direction. As shown in detail in FIG. 5, the end surfaces of the engagement rollers 10 a and 10 b are located on the same side as the end surface 6 a of the landing side sill 6 or on the landing side.

  The car door engaging portions 82 are L-shaped cross-sectional hangers 7a and 7b arranged in parallel to the landing-side hangers 8a on the upper end surfaces of the car doors 1a and 1b, and the widthwise ends of the hangers 7a and 7b. It has the engagement rollers 14 and 15 attached. A car engagement element 9, which will be described in detail later, is attached to the intermediate portion in the width direction of the hanger 7 a of one car door 1 a.

Door shoes 3 and 4 that slide in grooves formed in the landing side sill 6 and the car side sill 5 are provided at the lower ends of the landing doors 2a and 2b and the car doors 1a and 1b, respectively. The rail 19 is fixed to the upper part of the elevator car (not shown) of the elevator so as to extend beyond the opening / closing width of the car doors 1a, 1b. The engagement rollers 14 and 15 on the car doors 1a and 1b roll on the rails 19.

  A motor 11 is installed at the top of the car. A drive pulley 12 is attached to the output shaft of the motor 11, and an endless belt 18 is mounted on the drive pulley 12. The endless belt 18 is also mounted on a driven pulley 13 fixed to the opposite side of the car in the width direction. A hanger 17 connects the upper side of the endless belt 18 and the hanger 7b on the one car door 1b side, and a hanger 16 connects the lower side of the endless belt 13 and the hanger 7a on the other car door 1a side. Are attached to the hangers 7a and 7b.

  Since the landing-side engaging portion 81 and the car-side engaging portion 81 are configured as described above, when the motor 11 is rotated clockwise, the hanging tools 16 and 17 having one end attached to the endless belt 18 are moved away from each other. At the same time, the door shoe 3 slides in the car sill 5. Thereby, the car doors 1a and 1b open smoothly. If the motor 11 is rotated in the reverse direction, the car doors 1a and 1b are closed.

  Although the car engaging element 9 is separated from the landing side engaging roller in the lifted state or the like of the elevator, the car engaging element 9 is engaged with one landing door 2a and synchronized with the car door 1a as described later when the door is opened and closed. Open and close. Although not shown in the figure, an endless belt and two pulleys are also arranged on the upper side of the doors 2a and 2b on the landing side, and the endless belt is connected to the hangers 8a and 8b via a hanging tool. As a result, when the car engaging element 9 and the engaging rollers 10a and 10b are engaged, the landing doors 2a and 2b are opened and closed in synchronization.

  Next, the engaging operation using the car engaging element 9 will be described with reference to FIGS. FIG. 3 is a perspective view of the car engaging element 9 attached to the hanger 7a on the car door 1a side, FIG. 4 is a front view thereof, and FIGS. 5 and 6 are top views thereof.

  A bracket 20 is mounted on the hanger 7a of the car door 1a. The bracket 20 holds a solenoid 21 that is used to project the engaging element 9 toward the landing side or retract it toward the car side. A mover 23 protrudes from one end side of the solenoid 21. An engaging member 9 having a concave shape that engages with the rollers 10 a and 10 b of the landing doors 2 a and 2 b is disposed adjacent to the solenoid 21. The engagement element 9 is located on the same side as the end face 5a of the car sill 5 or on the car side of the car sill 5 when the elevator is raised or lowered. In order to advance and retract the engaging element 9, a link mechanism 90 having one end connected to the movable element 23 of the solenoid 21 and the other end connected to the engaging element 9 is arranged. The link mechanism 90 converts the linear motion direction of the solenoid 21 by approximately 90 degrees to move the engaging element 9.

The link mechanism 90 has a flat joint 37 having a tip attached to the mover 23 and penetrating through a hole formed in the bracket 20, and a shaft 35 having one end attached to an intermediate portion of the joint 37 and extending in the vertical direction. And a flat link coupling member 32 having one end connected to the other end of the shaft 35. The lower end portion of the shaft 35 is fixed to the hanger 7a via the parallel link 30 so as to be freely rotatable. A hole is formed in the end of the joint 37 and the tip of the link coupling member 32, and a shaft 34 extending in the vertical direction passes through the hole. A pair of long links 25 and 31 are also attached to the shaft. The long links 25 and 31 are arranged vertically. A hole is formed in the middle part of each long link 25, 31, and the shaft 33 passes through this hole. One end side of the short links 27 and 28 is attached to the shaft 33 at intervals in the vertical direction. The other ends of the short links 27 and 28 are rotatably fixed to the hanger 7a via a fixing jig 7c.

Both end portions of the shaft 34 extend vertically beyond the joint 37 and the long link 31, and one ends of the tension springs 24 and 36 are attached to this portion. The other ends of the springs 24 and 36 are fixed to the hanger 7a directly or indirectly via the support shaft 26, respectively. One end of the parallel links 29 and 30 is also connected to the engagement element 9, and the other end of the parallel link 30 is fixed to the hanger 7a via a fixing jig 7d. The parallel links 29 and 30 are links having two link plates. .
Elastic members 22 and 38 made of rubber or the like are attached to the mover 23 and the bracket 20 in order to reduce an impact when the mover 23 moves. The moving direction of the mover 23 is a direction parallel to the direction in which the car doors 1a and 1b are opened and closed. In general, the space on the car doors 1a and 1b has a margin in the direction in which the car doors 1a and 1b open and close, but there is no room in the door thickness direction, which is the perpendicular direction. In particular, when narrowing the gap g _ap between the landing sill 6 and the car threshold 5, the margin will be more and more reduced.

Therefore, in the present embodiment, the solenoid 21 acting in the opening / closing direction of the car doors 1a, 1b is used to move the engagement element 9. Since the solenoid 21 is arranged as in this embodiment, the amount of movement of the mover 23 can be increased. As a result, for example, the gap gap _ap between the sill 6 and the car sill 5 is reduced to 10 mm, and when engaged, the engagement element 9 is engaged with the engagement rollers 10 a and 10 b of the landing doors 2 a and 2 b by 10 mm. In this case, the movement amount of the car engagement element 9 may be only 20 mm. If a link mechanism that moves by a movement amount of 1: 1 of the mover 23 of the solenoid 21 is used, the move amount of the mover 23 of the solenoid 21 may be 20 mm.

  The cage engaging element 9 has a shape that is bent into a U-shape, and engages the engaging rollers 10a and 10b in the U-shape. The length in the width direction of the car engagement element 9 is set to be longer than the sum of the diameters of the two engagement rollers 10a and 10b. Therefore, the engagement rollers 10a and 10b can be engaged with the engagement elements within a predetermined range even if the landing height of the car is deviated.

  The link mechanism 90 uses the parallel links 29 and 30 having two link plates to straighten the forward / backward movement of the car engagement element 9. Further, the upper and lower link groups are operated synchronously using the shaft 35 and the link coupling member 32. The shaft 35 and the link coupling member 32 equally distribute the suction force of the solenoid 21 up and down. The tension springs 24 and 36 are used for projecting the car engagement element 9. Each link 25, 27, 28, 31 is attached to each shaft 33, 34 via a bearing (not shown).

  Next, operations of the long links 25 and 31 and the short links 27 and 28 will be described. As shown in FIG. 5, one end of each of the short links 27 and 28 is coupled to a substantially central portion in the longitudinal direction of the long links 25 and 31. The length L1 of the long links 25 and 31 is twice the length L2 of the short links 27 and 28. Since the length relationship between the long links 25 and 31 and the short links 27 and 28 is determined in this way, when one end of the long links 25 and 31 is linearly moved, the other ends of the long links 25 and 31 are on one end side. It moves linearly in the direction converted from about 90 degrees.

  The door opening / closing operation will be described with reference to FIGS. During the elevator travel, both the landing doors 2a and 2b and the car doors 1a and 1b are closed. At this time, the solenoid 21 is energized and the mover 23 is attracted. The long links 25 and 31 connected to the mover 23 are also pulled toward the solenoid 21 side. Thereby, the car engagement element 9 is pulled to the hanger 7a side. The springs 24 and 36 are extended by a predetermined amount by the attractive force of the solenoid 21. The car engagement element 9 is pulled toward the hanger 7 a and is located on the end face 5 a of the car sill 5 or on the car side with respect to the end face 5 a. That is, the engaging element 9 is not engaged with the engaging rollers 10a and 10b, and the car-side engaging element 9 does not collide with the sill 6 on the landing side that passes through each floor. When the landing position detection sensor (not shown) detects the landing of the car, the car stops. Then, the operation moves to opening the door.

  FIG. 6 is a view showing a state in which the engagement element 9 is engaged with the engagement rollers 10a and 10b. When the landing doors 2a and 2b and the car doors 1a and 1b are both closed, the power supply to the solenoid 21 is stopped. Then, the attraction force to the mover 23 is released, and the springs 24 and 36 that have been extended by the attraction force of the solenoid 21 are contracted by the own spring force. As a result, the mover 23 moves in the direction of the arrow pushed out from the solenoid 21. Along with this, the part C where the long links 25 and 31 are coupled to the joint 37 also moves in the direction of the arrow A.

  Here, the length L1 of the long links 25 and 31 is twice the length L2 of the short links 27 and 28, and the connection point between the short links 27 and 28 and the long links 25 and 31 is the length of the long links 25 and 31. Since it is the center in the longitudinal direction, the link length is AB = BC = BD. If a circle centered on point B is drawn, this circle passes through points A, C and D. Therefore, the link length AC is the diameter of this circle, and the angle CDA is always a right angle. Point A moves on a straight line DA perpendicular to the straight line CD. Since the car engagement element 9 is attached to the portion A of the long links 25 and 31, it is pushed out by the link mechanism 90. And it is guided by the parallel links 29 and 30, and engages with the engaging rollers 10a and 10b that face each other directly.

  Here, the car engaging element 9 moves from the car door 1a, 1b side to the landing door 2a, 2b side almost horizontally without resisting gravity, so that the solenoid 21 has a frictional force for operating the link mechanism 90 and springs 24, 36. It is only necessary to output only the force corresponding to the force that stretches. Although the space in the door thickness direction at the top of the car is narrow, the movement direction of the solenoid 21 is the door opening / closing direction, the movement direction is changed using the link mechanism 90, and the engagement element 9 is changed to the engagement rollers 10a and 10b. Since it is made the structure engaged, the moving amount | distance of the engagement element 9 can fully be ensured also in a narrow space.

  When the motor 11 arranged on the upper part of the car door 1b is driven from the state in which the engagement element 9 and the engagement rollers 10a and 10b are engaged, the hanging tools 16 and 17 attached to the hangers 7a and 7b are moved to the left and right together with the endless belt 18. Move to. At this time, when the car doors 1a and 1b are opened, the side plate portions of the car engaging elements 9 come into contact with the engaging rollers 10a and 10b, and the landing side doors 2a and 2b start to be opened together. When the car doors 1a and 1b are completely opened, the motor 11 is stopped, and the car doors 1a and 1b and the landing doors 2a and 2b are opened. Even if there is a power failure during the door opening operation, the engaging element 9 and the engaging rollers 10a and 10b are engaged. Therefore, if the car doors 1a and 1b are opened manually, the landing doors 2a and 2b can be opened together. Can do.

  When the person gets on and off, the landing doors 2a and 2b and the car doors 1a and 1b are closed. From the state where the doors 1a to 2b are completely opened, the motor 11 is rotated in the direction opposite to that when the doors 1a to 2b are opened. And the hanging tools 16 and 17 are moved to the center side, and each door 1a-2b is closed. Thereafter, the solenoid 21 is energized to operate the engaging element 9. That is, the car engagement element 9 is attracted by the solenoid 21 and retreats to the car sill 5 side. Thereby, it will be in the same state as the time of the driving | running | working of the elevator shown in FIG. After that, the elevator moves to the destination floor.

  The above is the operation of the elevator door device when the elevator is normally operated. Next, the operation at the time of a power failure that is an emergency will be described. This is the case when a power failure occurs during elevator travel. FIG. 7 shows a block diagram of the elevator control device. A lifting device 45 that lifts and lowers the elevator is controlled by a lifting drive circuit 44. The door device 46 is controlled by a door drive circuit 47. A power supply is connected to these drive circuits 44 and 47 via a main power supply circuit 41 that boosts and rectifies the commercial power supply 40. A standby power supply 43 is connected to these drive circuits 44 and 47 in parallel via a changeover switch 42 in preparation for a power failure.

  When a power failure occurs during elevator operation, a braking device (not shown) temporarily stops the elevator. Thereafter, the changeover switch 42 is operated to switch the power source to the standby power source 43 side. At that time, run the elevator at a low speed in a direction that requires as little power as possible and land on the nearest floor. And the operation of the elevator is suspended.

  Here, the elevator travels by the braking distance after the power failure and before the elevator is stopped using the braking device. Further, when the power is not supplied to the solenoid 21, as shown in FIG. 6, the car engaging element 9 protrudes to a position protruding forward from the car sill 5, that is, a position engaging with the engaging rollers 10a and 10b. Therefore, when there is a landing-side threshold 6 within the braking distance, the protruding portion of the car engagement element 9 may collide with the landing-side threshold 6. In order to avoid this problem, the following avoidance measures are taken in this embodiment.

  FIG. 8 shows a drive circuit for a car engagement element of the door device. A power supply line 48 is connected to one end of the solenoid 21, and the other end of the solenoid 21 is grounded via a control circuit 53 that controls ON / OFF operation timing and a switching element 52 that performs ON / OFF operation. The control circuit 53 is also connected to a dedicated power line 49. An electric double layer capacitor 50 having a capacity capable of driving the solenoid 21 is connected between the power line 48 of the solenoid 21 and the ground.

  Since the general solenoid 21 requires several tens of volts for the drive voltage, a plurality of capacitors are connected in series. The electric double layer capacitor 50 can supply a current of several amperes at a voltage of several volts for a predetermined time. Therefore, if a plurality of capacitors are connected in series, the current for driving the solenoid 21 can be reliably ensured. Similarly, an electric double layer capacitor 54 having a capacity capable of driving the control circuit 53 is connected between the power line 49 for the control circuit and the ground. These capacitors 50 and 54 are normally charged from the power supply lines 48 and 49, and are kept charged during operation of the elevator. Once the power supply lines 48 and 49 are cut off, that is, when a power failure occurs, the electric double layer capacitors 50 and 54 serve as backup power supplies and drive the solenoid 21 and the control circuit 63 while discharging electric charges.

  The detailed operation of this circuit will be described below. In normal times, currents Is0 and Ic0 flow from the power supply lines 48 and 49 to the solenoid 21 and the control circuit 53, respectively. When the control circuit 53 determines that the solenoid 21 is to be turned ON, the switching element 52 is operated to pass a current through the solenoid 21 through the Is0 path. At the time of a power failure, the control circuit 53 is driven by the currents Is1 and Ic1 flowing from the electric double layer capacitors 50 and 54 simultaneously with the power failure. When the control circuit determines that the solenoid 21 is to be turned ON, the switching element 52 is operated to pass a current through the solenoid 21 through the Is1 path. Therefore, even when the elevator travels for the braking distance at the time of a power failure and passes through the sill 6 on the landing side, power is supplied to the solenoid 21 without interruption. Thereby, the car engagement element 9 can stay at the position retracted inside the car sill 5, and collision with the landing side sill 6 can be avoided.

  If the electric resistance element 51 provided between the electric double layer capacitor 50 and the solenoid 21 is arbitrarily selected, the discharge time constant of the electric double layer capacitor 50 can be freely selected, and the moving speed of the solenoid 21 is suppressed within a predetermined range. It is done. As shown in FIG. 9, the voltage V0 of the electric double layer capacitors 50 and 54 gradually decreases when the predetermined time T0 is exceeded, and the solenoid 21 cannot be driven when the voltage V1 is lower than the predetermined voltage V1. Therefore, when the power supply ends using this voltage drop characteristic 55, the movable speed of the solenoid 21 is suppressed to a low speed. If an electric double layer capacitor having such characteristics is used, when there is a sill 6 on the landing side facing the stop position of the car engagement element 9, the power supply to the solenoid 21 is cut off after a predetermined time T1. The protruding speed of the cage engaging element 9 becomes slow, and the impact of a frontal collision with the landing threshold 6 can be mitigated.

  In the present embodiment, the electric double layer capacitors 50 and 54 are used as the standby power source for driving the solenoid 21, but not limited to this, a lead storage battery, a nickel cadmium battery, or the like can be used. The charging time of the electric double layer capacitors 50 and 54 is as short as several seconds, the cycle life is more than 100 times that of the storage battery, and the pollution is low. Conversely, the discharge characteristics of the storage battery are almost constant, and a power source can be secured over several tens of minutes. Moreover, energy density is large. In the elevator apparatus, it is sufficient if there is a means that can supply power only for the time until switching to the standby power supply in the event of a power failure. By using the electric double layer capacitors 50 and 54 that can secure the power for several tens of seconds and have a short charging time, Simplification or miniaturization can be achieved.

  As described above, according to the preferred embodiment, the car engagement element of the elevator door device can be advanced and retracted in the front-rear direction by using the link mechanism. Therefore, when the engagement element is not engaged with the engagement roller, The combination is retracted to the inside of the car sill and protrudes and can be engaged with the engaging roller when the door is opened and closed. As a result, since there is no obstruction between the car sill and the landing sill while the elevator is raised and lowered, the gap between the car sill and the landing sill can be reduced to the ultimate. The value of the gap can be about 10 mm considering the construction error of the elevator hoistway. Of course, if this construction error is reduced, the gap between the sills can be further narrowed. In addition, since the movement direction can be changed by approximately 90 degrees by the link mechanism, the drive device for the engagement element can be easily installed in a narrow space above the door device.

  Furthermore, since the car engaging element is moved in the horizontal direction without resisting gravity, the driving means can be reduced in size. When the engagement element is in the engaged state, it can be de-energized, so if it is within the predetermined landing level even during a power failure, the engagement element can be held in the engaged state, and the user in the car can manually open the door. You can open it and leave the car. In addition, even if a power failure occurs during traveling, the drive circuit of the engagement element driving device includes a standby power source that can be driven for a predetermined time. Therefore, the engagement element driving device can be operated even when the main power of the elevator is switched. It is possible to prevent the car engaging element from protruding from the car sill and colliding with the landing sill during the movement of the braking distance.

The side view of one Example of the elevator door apparatus which concerns on this invention. The ZZ arrow line view of the elevator door apparatus shown in FIG. The perspective view of the movable engagement element with which the elevator door apparatus shown in FIG. 1 is provided. FIG. 4 is a front view of the movable engagement member shown in FIG. 3. FIG. 4 is a top view of the movable engagement member shown in FIG. 3. It is a top view of the elevator door apparatus shown in FIG. 1, and is a figure which shows the engagement state of an engagement element. The control block diagram of the elevator which concerns on this invention. FIG. 2 is a control circuit diagram of a solenoid used in the elevator door device shown in FIG. The figure explaining the voltage characteristic of a control circuit element.

Explanation of symbols

1a, 1b ... car door, 2a, 2b ... landing door, 5 ... car side sill , 6 ... landing side sill , 7a, 7b ... hanger, 8a, 8b ... landing side hanger, 9 ... car engagement element, 10a, 10b ... Board-side engaging roller, 14, 15 ... engaging roller, 16, 17 ... door hanger, 21 ... solenoid (drive means), 24, 36 ... spring, 25, 31 ... long link, 27, 28 ... short link, DESCRIPTION OF SYMBOLS 29, 30 ... Parallel link, 41 ... Main power supply circuit, 44 ... Winding machine drive circuit, 45 ... Winding machine, 46 ... Door opening / closing device, 47 ... Door opening / closing device driving circuit, 50, 54 ... Electric double layer capacitor, 90 ... Link mechanism (advance / retreat means), i1, i2, i3, i4... Current.

Claims (3)

A landing-side hanger having an L-shaped cross section disposed on the upper end surface of the landing door and extending in the opening and closing direction, and a landing-side engagement roller attached to an end in the width direction of each landing-side hanger, The end surface of the landing side engaging roller is the same as the end surface of the landing side sill or the landing door engaging portion located on the landing side, and the upper end surface of the car door, which is arranged in parallel to the landing side hanger. A cross-sectional L-shaped hanger, an engagement roller attached to the width direction end of the hanger, and a car door engagement part having a car engagement element attached to the width direction intermediate part of the hanger In the elevator door device in which the car engagement element engages with the landing door engaging portion when the door is opened and closed, and the landing door opens and closes in synchronization with the car door,
A solenoid that is held at the top of the hanger, protrudes from one end side, and the mover acts in the opening / closing direction of the car door to project the engaging element to the landing side or retract to the car side;
A flat joint with a tip attached to the mover;
A shaft (34) extending vertically through a hole formed in the end of the joint on the side opposite to the solenoid;
A pair of long links, one end attached to the shaft (34) and the other end attached to the car engagement member,
A shaft (33) passing through a hole formed in the middle part of each long link;
A short link that is attached to the shaft (33) at one end and the other end is attached to the hanger and is rotatably fixed at an interval in the vertical direction;
The length of the long link is twice the length of the short link, and when the power supply to the solenoid is stopped, the mover is pushed out of the solenoid and moved, and the long link The other end of the car moves linearly in a direction converted 90 degrees with respect to the one end side, and the car engagement element moves from the car door side to the landing door side and engages with the landing door engaging part. The elevator door device characterized by combining . The shaft according to claim 1, wherein one end is attached to an intermediate portion of the joint, and a lower end is rotatably fixed to the hanger via a parallel link (30), and the engagement element. An elevator door device comprising: a parallel link (29) having one end connected to the hanger and the other end fixed to the hanger. The elevator door device according to claim 1, further comprising an electric double layer capacitor that supplies electric power to the solenoid for a predetermined time during a power failure.

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